Elcometer 138 电导率计

测试步骤：

从盐分贴片中心，取出保护包装和泡沫。

 Remove protective backing and foam centre from the patch.

在表面贴上盐分贴片，紧压边缘，实现完全密封—确保测试舱中有最少的空气

Apply the patch to surface and press firmly around perimeter to achieve a complete seal - ensuring that a minimum amount of air is trapped within the test compartment.

用3ml 纯水填入注射器。 通过海绵泡棉周长以大约30°到测试面的角度，将注射器插入贴片 , 使其穿过泡棉到测试的贴片。

 Fill the syringe with 3.0ml of pure water. Insert the syringe into the patch through its foam perimeter, at a 30° angle, so that it passes through the foam into the test compartment.

注入水到测试的贴片。 如果有必要, 去除贴片内剩余空气 。

Inject the water into the test compartment. If necessary remove the remaining air within the compartment.

期间商定的时期内 , 无需取出针 , 吸和重新注入该溶液到贴片至少四次 。

During an agreed period of time, without removing the needle - withdraw and re-inject the solution back into the patch, at least four times.

在该期间结束时 , 尽可能多提取溶液 。

At the end of the period extract as much solution as possible.

从贴片拔掉注射器，使用合适的电导率仪例如Elcometer138来测量溶液中的电导率。

Remove the syringe from the patch and measure the conductivity of the solution using a suitable Conductivity Meter such as the Elcometer138.

计算盐分含量：

如果测试读数的单位是uS/cm,那么用读数乘以1.2,可得到盐分含量的单位mg/㎡。